ipsec_gre.c File Reference

L2-GRE over IPSec packet processing. More...

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Data Structures
struct	ip4_and_gre_union_t
	IPv4 and GRE header union. More...
struct	ipsec_gre_tx_trace_t
	Packet trace. More...

Functions
u8 *	format_ipsec_gre_tx_trace (u8 *s, va_list *args)
static uword	ipsec_gre_interface_tx (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	IPSec-GRE tunnel interface tx function. More...
static clib_error_t *	ipsec_gre_interface_admin_up_down (vnet_main_t *vnm, u32 hw_if_index, u32 flags)
static u8 *	format_ipsec_gre_tunnel_name (u8 *s, va_list *args)
static u8 *	format_ipsec_gre_device (u8 *s, va_list *args)
	VNET_DEVICE_CLASS (ipsec_gre_device_class)
	VLIB_DEVICE_TX_FUNCTION_MULTIARCH (ipsec_gre_device_class, ipsec_gre_interface_tx)
static clib_error_t *	ipsec_gre_init (vlib_main_t *vm)

Variables
ipsec_gre_main_t	ipsec_gre_main

Detailed Description

L2-GRE over IPSec packet processing.

Add GRE header to thr packet and send it to the esp-encrypt node.

Definition in file ipsec_gre.c.

Function Documentation

format_ipsec_gre_device()

static u8* format_ipsec_gre_device ( u8 *  s, va_list *  args  )

static

Definition at line 336 of file ipsec_gre.c.

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format_ipsec_gre_tunnel_name()

static u8* format_ipsec_gre_tunnel_name ( u8 *  s, va_list *  args  )

static

Definition at line 329 of file ipsec_gre.c.

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format_ipsec_gre_tx_trace()

u8* format_ipsec_gre_tx_trace	(	u8 *	s,
		va_list *	args
	)

Definition at line 57 of file ipsec_gre.c.

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ipsec_gre_init()

static clib_error_t* ipsec_gre_init ( vlib_main_t *  vm )

static

Definition at line 365 of file ipsec_gre.c.

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ipsec_gre_interface_admin_up_down()

static clib_error_t* ipsec_gre_interface_admin_up_down ( vnet_main_t *  vnm, u32  hw_if_index, u32  flags  )

static

Definition at line 316 of file ipsec_gre.c.

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ipsec_gre_interface_tx()

static uword ipsec_gre_interface_tx ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

IPSec-GRE tunnel interface tx function.

Add GRE header to the packet.

Parameters

vm	vlib_main_t corresponding to the current thread.
node	vlib_node_runtime_t data for this node.
frame	vlib_frame_t whose contents should be dispatched.

Graph mechanics: buffer metadata, next index usage

Uses:

• node->runtime_data
  • Match tunnel by rd->dev_instance in IPSec-GRE tunnels pool.

Sets:

• vnet_buffer(b)->output_features.ipsec_sad_index
  • Set IPSec Security Association for packet encryption.
• vnet_buffer(b)->sw_if_index[VLIB_TX]
  • Reset output sw_if_index.

Next Index:

• Dispatches the packet to the esp-encrypt node.

Definition at line 96 of file ipsec_gre.c.

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VLIB_DEVICE_TX_FUNCTION_MULTIARCH()

VLIB_DEVICE_TX_FUNCTION_MULTIARCH	(	ipsec_gre_device_class	,
		ipsec_gre_interface_tx
	)

Definition at line 355 of file ipsec_gre.c.

VNET_DEVICE_CLASS()

VNET_DEVICE_CLASS

(

ipsec_gre_device_class

)

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Variable Documentation

ipsec_gre_main

ipsec_gre_main_t ipsec_gre_main

Definition at line 25 of file ipsec_gre.c.